Some formats that can be considered are JPEG 2000, CALS, GIF, IOCA, JBIG, JBIG2, TGA, TIFF, EXIF, ICO.

If you have a large image inside RadImageEditor or have zoomed a relatively big image, it would be great to have the ability to set panning on, so that the user can move around more easily.


Available in R1 2017 Release

Implement a drawing tool that will enable drawing over the picture using the mouse.

This feature will be available in our official release Q1 2015.

Add more built-in brushes and pencils to the DrawTool. Currently, this can be achieved by customization of DrawTool.

Add properties for setting minimal and maximal scale factor in RadImageEditor. 

Add an option to zoom towards the mouse cursor.

Add tool for creating selection, and integrate the other tools to work only in the selected region, if one is present.

Sometimes it is better not to integrate changes directly into a bitmap. Layers will enable grouping the effects of several tools and applying/reverting the changes at a later time.
Alphachannel support in Silverlight is already available. Saving may require a proprietary file format, Paint.NET's .pdn or tiff export/import.

Currently, on each change of the image, a new instance of the image is stored in the undo/redo stack. This means that the memory grows very fast. Especially, in a scenario with big images.

Create a smarter undo/redo mechanisms that saves only the applied change in the image.

Introduce support to rotate the image for any degrees. Currently it can rotate the image on 90, 180 and 20 degrees.

Expose property (e.g. InitialPosition) that will set X and Y start in CropCommandContext from CropTool

To achieve this with the current API this you can get the CropAdorner control from the visual tree and set its CropRect property.

private void imageEditor_Loaded(object sender, RoutedEventArgs e)
{
ImageEditorRoutedCommands.ExecuteTool.Execute(new CropTool(), this.imageEditor);
var cropAdorner = this.imageEditor.FindChildByType<CropAdorner>();
cropAdorner.CropRect = new Rect(10, 10, 100, 100);
}

The user should create a custom tool if they need to change the default settings of the DrawTextTool. It would be nice to provide an easier way for achieving this.

Extend the list of predefined shapes for the ShapeTool with arrows.

Currently, the RadImageEditor control does not provide support for loading, modifying, and saving EMF and WMF files.

We could add support for these file formats.

 When user is dragging the crop rectangle, the cursor should be a hand (for example).

Enable the users to set default values for Shape tool properties (fill, stroke, thickness, border color, is ratio locked).

Introduce a special file format for RadImageEditor which enables to edit the changes made on an image. 

For example: When the user opens the image at some point in the time, he/she should be able to edit the made changes on the image - e.g. to remove the drawn text or shapes. 

Currently there isn't a way to determine if an image in the Image Editor has any changes.

There is a HistoryOnCurrentImageChanged() event which goes some way to providing the functionality, but this doesn't fire until a tool is committed.

For example, if you load an image, and select the Hue tool, and then drag the hue slider and change the image, this won't trigger the HistoryOnCurrentImageChanged() event until the user commits the tool e.g. clicks another tool or clicks off the image...

What would be perfect would be to have a HasChanges() property on the image editor that gets set to true when any aspect of the image is edited e.g. a tool slider is moved and the changes are not yet committed.

This would allow things like being able to have the the Save button disabled until the image is edited. Or being able to warn a user they are about to lose their changes if they have edited (say) the hue but have not yet committed the tool.

See also - https://www.telerik.com/forums/detecting-change 

Thanks